Firstly, I think Socionics Intertype Relations Theory is a fairly accurate way to predict how a relationship will unfold in many cases.
However, I find myself experiencing challenging relations with types I should get along with according to Socionics.
An example: my dual, the ILL that are E5s. I know several ILLs that are E5 and we keep our distance from one another.
However, the ILL E3w4 and I get along with quite well.
I find it easy to get along with LIEs (super-ego) who are 7s, and SLIs (supervisee) who are 3s (3w4 and 3w2).
I tend to prefer the company of E9s of most types- I am in a relationship with an LSI who is a 9w8 and we have excellent chemistry.
What are your thoughts on Enneagram compatibility compared to Socionics compatibility? Is it a better predictor of issues in the relationship?